The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 08, 2009
Filed:
Jul. 15, 2004
Séverine Aubonnet, Viroflay, FR;
Patrick Maire, Raizeux, FR;
Didier Lamourette, Les Essarts le Roi, FR;
Benoît Estaca Sagot, Levallois-Perret, FR;
Séverine Aubonnet, Viroflay, FR;
Patrick Maire, Raizeux, FR;
Didier Lamourette, Les Essarts le Roi, FR;
Benoît Estaca Sagot, Levallois-Perret, FR;
Intertechnique, , FR;
Abstract
A demand and dilution mask regulator comprising an oxygen feed circuit and a dilution circuit for supplying air. The oxygen feed circuit and the dilution circuit are connected to a mixing chamber (). In the dilution circuit, the inhaled breathe-in air flow rate is measured through a capillary duct () connected to a Venturi construction (). A method of regulating the flow rate of additional oxygen uses flow rate data measured through the capillary duct () for controlling the oxygen flow rate to be supplied to the mixing chamber ().